Skin pass mill

Skin-pass mills for a perfect finish

Today, there is cold-rolled strip almost everywhere you look. It comes with various surface effects: high-gloss, matt or anywhere in between for beautiful, elegant finishes. Yet steel strip surfaces are not only good-looking, they also have important technical functions. Take for example the correct roughness, which ensures perfect painted surfaces. Other material properties are essential for industrial processing, e.g. deep drawing.

Most important of all steps here is skin-passing following cold strip manufacture. Skin-pass mills (SPM) from SMS group achieve the precise mechanical and geometrical properties you need for your applications. It’s a process that serves to attain the correct yield points and the desired surface characteristics such as roughness and flatness.

Concepts

Designs for hot and cold rolled strip

Skin-pass mills are installed at the end of the flat steel production process chain. They are essential for smooth processing of steel strip. There are five basic types of skin-pass mills available from SMS group. The options for skin-passing carbon steel are: an independent rolling facility, a so-called offline SPM, or a continuous solution integrated in a strip processing line (inline skin-pass mill – ISPM).

Skin-passing hot strip

Skin-passed hot strip offers you these advantages: Most importantly, this process helps you attain perfect strip flatness. It also harmonizes the yield points and prevents the flow and break lines that can occur during uncoiling. Furthermore, the downstream pickling process is easier because skin-passing breaks up the scale layer.

Applying a gloss finish to stainless steel strip

The next stage after cold-rolling and recrystallization is skin-passing the stainless steel strip. This produces high-gloss surfaces and achieves the desired mechanical strip properties such as deep-drawing strength.

Second rolling stage for tinplate: double cold reduction mills (DCR)

A special feature of tinplate production is the second rolling step for thickness reduction after annealing. Running parallel to this is a temper rolling process that prepares the strip for further surface finishing and coating. Our twin-stand double cold reduction mills (DCR) combine reduction rolling and skin-passing in a single mill.

Special applications and extended elongation

Yet SPMs are even more versatile. They are also ideal for use in pickling and cut-to-length lines or systems for extended strip elongation. Whatever your requirements, you can rely on optimal SPM design from SMS.

Technology

Superior actuators for roll gap setting

Extended bending system (EBS)

Unique to our extended bending system (EBS) is the maximum flexibility it creates in skin passing. It works by adapting rolling forces to the material and surface requirements. That guarantees precise control of low rolling forces.

Dry strip system (DS system)

Now available to you is our new-generation DS system. It offers you an ideal, contact-free way to remove rolling emulsion residues from strip. What makes this system so highly efficient is that it needs less compressed air.

X-Pact® Mill Stand Control (TCS)

X-Pact® Pass Schedule Calculation (PSC®)

The system calculates the set-points per pass according to current process parameters and limitations

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X-Shape Flatness Measurement and Control

Stand-alone measuring system for flatness control perfectly tailored to your process requirements.

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Product quality analyzer (PQA)

Solution for smooth process flow and constant high quality

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Upgrade Package Basic Automation

New state of the art hardware, latest development software

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Virtualization

Safeguarding plant lifetime

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X-Pact® Drive

Low voltage frequency converter as integral part of X-Pact®

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X-Pact® Energy Advisor

Energy management for metallurgical plants and rolling mills

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X-Pact® MES 4.0

Production planning and scheduling for all production units in the plant

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Service

Service

Consulting & Training

Building on experience

However, not only a service partner for your plants and machines, SMS group is also there for your staff. Furthermore, You can enroll on standardized and individual training programs designed for you by our SMS TECademy. That ensures you strengthen your competence as a plant owner.

Service

Maintenance & Repairs

Whether you require one-off equipment checks, continuous condition monitoring, remote service, or regular plant inspections: our service experts will take care of it all. You can even outsource your complete maintenance operations to us. This ensures excellent plant availability plus best production results.

Service

Spare parts & Logistics

When the spare parts you need are no longer available or the new generation is not 100% compatible, you risk plant standstills. That's why SMS group constantly monitors the availability of all parts and, where necessary, offers modern alternatives - even for parts from third-party suppliers. This ensures competitiveness and full productivity over the entire life cycle of your plant.

Service

Upgrades & Modernization

Keep your plant state-of-the-art

Even plants "built to last" need to be critically examined from time to time, because markets and production processes are continuously evolving. Together with you, our service experts will find the best revamp options for your requirements. Once again bang up to date, your plants will then be ready to bolster your strong position on the market.

Service

X-Roll® Oil Bearing

For more reliability, safety and efficiency

SMS group has banked 60 years of experience supplying all generations of oil film bearings to rolling mills in the steel and non-ferrous industry worldwide. Today, you can identify our modern and cost-effective roll neck bearings by the SMS group trademark. TEST TEST

Press & Media

Contact

SMS group App

Don’t miss out on the latest news, comprehensive background reports and key information about the SMS group’s activities at the trade fairs. The push news function of the SMS group app immediately informs you about any new information posted on the press portal.